/Engine/Plugins/Runtime/MassGameplay/Source/MassActors/Public/MassActorSpawnerSubsystem.h
Managing class of spawning requests handles.
typedef [FIndexedHandleManager](API\Runtime\AIModule\FIndexedHandleManager)< [FMassActorSpawnRequestHandle](API\Plugins\MassActors\FMassActorSpawnRequestHandle), true > FMassEntityHandleManager_ActorSpawnRequest